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2 years ago

PLEASE PLEASE HELP

Mathematics

2 answers:

blagie [28]2 years ago

8 0

Answer:

8.51×10^-3 cm

Step-by-step explanation:

Hope this helps :)

noname [10]2 years ago

7 0

Answer:

$8.51x10^{-3}cm$

Step-by-step explanation:

In order to add or subtract numbers in scientific notation, the powers of ten must have the same exponent. In this caes the diameter of an average human body cell is a power of -4 and the diameter of a plant cell is a power of -3. In order to add them, we can move the decimal over for the body cell diameter:

$5.1x10^{-4}=0.51x10^{-3}$

Add the two values: $0.51x10^{-3}+8x10^{-3}=8.51x10^{-3}cm$

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